Securely Storing Facebook / OAuth Access Tokens
Facebook and all OAuth applications (facebook is sort-of OAuth) provide access tokens for applications to do things on behalf of users. I’ll not go into details of how to obtainContinue reading
Where Is That Class / Resource Located?
How many times have you been asked where some class or resource is located when you say “this configuration is in the foobar.properties”? It’s not rare. I’ve heard it manyContinue reading
Facebook Graph API – What Does Each Field Mean in Different Contexts
I’m having troubles with the Facebook Graph API. I want to display a facebook feed in a twitter-like, simplistic fashion, but facebook has quite a lot of fields when youContinue reading
ThreadLocal Variables and Thread Pools – It Can Go Wrong
Many libraries use ThreadLocal variables to store some thread context data. Usually in web applications this context is a single request (= thread). However, there’s a caveat – most containersContinue reading
Checked and Unchecked Exceptions in Java
Java has two types of exceptions – checked and unchecked. In short – checked are meant for cases when the developer can reasonably recover from the exception, while unchecked exceptionsContinue reading
Why Startups Should Not Choose NoSQL
The NoSQL hype is omnipresent. And many startups are tempted to go for Cassandra/MongoDB/HBase/Redis/… . Here I’ll argue why they should rather stick to a SQL solution – MySQL orContinue reading
Contexts and Dependency Injection Presentation
I’m uploading the slides and the demos from my presentation about CDI – Contexts and Dependency Injection for the JavaEE platform. Here is the presentation (also available on SlideShare) HereContinue reading
We Don’t Need No Password Strength Checker
Password strength checkers appear from time to time on web registration forms. But in my opinion they are useless. I’ll justify. Jeff Atwood lists the possible ways to obtain one’sContinue reading
How Does Merge Work in JPA (and Hibernate)
The JPA EntityManager there are the merge() and persist() methods. In hibernate there’s more – save, persist, saveOrUpdate, update, merge. I’m always using merge() for the sake of simplicity, butContinue reading
Views on CDI and What’s New in JavaEE6
In the light of this article which was criticized for not mentioning JavaEE6, I’m going to discuss JavaEE6 innovations. JavaEE 6 is still new – only one application server isContinue reading